Nucleus Paragon Espresso The Paragon’s patented design utilises innovative extract chilling technology to elevate your brewing experience. Resulting from years of extensive research, the tool has been scientfically proven to capture and express up to 40% more key aroma volatile molecules than an identical brew without chilling – flavour that would otherwise be lost to the environment. The chilling rock is a core component of the Paragon. Constructed from food-grade stainless steel and coated with a layer of highly durable titanium, its spherical shape and large surface area allow for even and rapid chilling. Offering greater thermal capacity, the high-density liquid gel centre maintains colder temperatures for longer, and freezes faster than hollow or water-filled alternatives.